In order for the Placement ID’s to work with Size Mapping, you’ll need to configure multi-sized Placement IDs according to Size Map.
Step 1: If the bidder provides multi-sized Placement IDs, request at least 1 Placement ID for every size map.
For example, AdUnit1 has 3 Size Maps:
Request multi-sized bidder to provide you with 3 Placement ID’s for this ad unit alone. Configure each Placement ID with Bidder sizes that corresponds to the Size Map.
Step 2: If the bidder provided separate Placement IDs for separate sizes, deploy accordingly:
Step 3: If an ad unit will run only on a specific device, still add other devices’ minWidths, but don’t add sizes to it.
A mobile unit will have the following size mapping setup:
A desktop/tablet unit will have the following size mapping setup:
Step 4: Save & publish